Microsoft SharePoint Server Spoofing Vulnerability

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? The user would have to click on a specially crafted URL to be compromised by the attacker.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires multiple conditions to be met, such as specific application behavior, user actions, manipulation of parameters passed to a function, and impersonation of an integrity level token.